Summary & Conclusion
Even sophisticated waterworks can’t give AMD's Radeon RX Vega 64 a happy ending. At least for our card, a good overclock remains an elusive goal.
You could say that the Power Saver mode is a lot more conservative, and that the card could be undervolted. Or you could save yourself a lot of time and money, and buy a Radeon RX 580 that's barely slower. Or just keep your old graphics card. Or buy an Nvidia GeForce card. You get the picture. Ultimately, Power Saver mode and undervolting doesn’t make the Radeon RX Vega 64 any more attractive. It just makes it more efficient and less noisy. What doesn't change is the card's high price. And that's a problem.
Those who’d really like to own and use a Radeon RX Vega 64 should think about better cooling. Alphacool's Eiswolf GPX-Pro shows us what’s possible. If you'd prefer another all-in-one kit or a custom loop, that's up to you. Either way, so long as you have a large-enough radiator, you'll realize a big gain over AMD's barely-adequate approach.
Take all of this into consideration before throwing $700 at AMD's Radeon RX Vega 64 Liquid Cooled Edition. A power consumption significantly higher than 300W is just too much for a small 120mm radiator. Your liquid-cooler of choice should also be designed to minimize noise. After all, pursuing an aggressive overclock just isn't worth it.
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